import sys
# file = sys.stdout
# file.write("Hello")
#
# print("world!")
file = open("test.txt", "rb")
print(file.read(1))
print(file.read(1))
print(file.tell())
print(file.seek(2,1))

#不需要写close
# with open("test.txt", "r",encoding="utf-8") as file2:
#     list2 = file2.readlines()
#     print(list2)
#
#
# str ="day day up"
# with open("test.txt", "w" ,encoding="utf-8") as file3:
#     file3.write(str)
#
# list3 = ["hello11", "world22"]
# with open("test.txt", "a", encoding="utf-8") as file4:
#     file4.writelines(list3)